Title :
Subreflectarrays for compact dual reflector antenna systems
Author :
Xu, Shenheng ; Rajagopalan, Harish ; Rahmat-Samii, Yahya
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
Reflectarrays are used as a hyperboloidal or ellipsoidal subreflector in dual-reflector antenna systems. The design formulas for reflectarrays acting as hyperboloid are discussed and its location consideration which is important for dual-reflector system is presented. A 48-inch Cassegrain antenna is chosen to demonstrate the application of compact dual-reflector designs. A subreflectarray is designed to emulate a hyperboloidal subreflector and the plots of the reflection phase shift and scattered field of the subreflectarray validate its effectiveness.
Keywords :
reflector antennas; Cassegrain antenna; compact dual reflector antenna design; ellipsoidal subreflector; hyperboloidal subreflector; subreflectarray; Antenna arrays; Antenna radiation patterns; Feeds; Geometry; Optical waveguides; Reflection; Reflector antennas; Cassegrain antenna; Gregorian antenna; antenna; dual reflector; reflectarray;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996949
